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Device and method for gas maintenance in microfeatures on a submerged surface

A micro-feature, inner surface technology, applied in chemical instruments and methods, processes for producing decorative surface effects, hydrodynamic features/hydrostatic features, etc., can solve problems such as short life of generated surfaces

Active Publication Date: 2017-08-18
RGT UNIV OF CALIFORNIA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Thus, chemical reaction based gas generating surfaces of the type disclosed in the '195 publication have a short lifetime

Method used

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  • Device and method for gas maintenance in microfeatures on a submerged surface
  • Device and method for gas maintenance in microfeatures on a submerged surface
  • Device and method for gas maintenance in microfeatures on a submerged surface

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Embodiment Construction

[0024] Figure 2 shows a microstructured hydrophobic surface 2 according to one embodiment. Microstructured surface 2 includes a substrate 4 having a plurality of microstructures or microfeatures 6 disposed thereon. Microfeatures 6 are generally oriented approximately perpendicular to substrate 4 . As used herein, the use of the term "microfeatures 6" refers to microscopic physical features; they are typically on the micrometer scale, but can be smaller or larger. The microfeatures 6 may be arranged in an array or in a random configuration. Microfeatures 6 may comprise gratings, grooves, ridges, bars, posts, holes, random structures, or porous materials. Substrate 4 may be formed from any number of materials, but as explained in the method, if a molding technique is used to form microstructured surface 2, substrate 4 may comprise a polymer. The microfeatures 6 have a protruding height relative to the surface of the substrate 4 . This height can vary, but is typically tens o...

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Abstract

A microstructured surface with microfeatures formed thereon and defining spaces between the microfeatures includes least one electrode of an electrode pair in the spaces, wherein electrodes of the pair are electrically connected to one another. The at least one electrode located in the space is configured to generate a gas in between the microfeatures when an electrolyte solution penetrates into the microfeatures. Importantly, the electrodes are not connected to any external power source. Because the microstructured surface is self-powered in replenishing the gas lost in a submerged condition, no additional provision to supply energy or regulate the replenishment is necessary for implementation and use.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application No. 62 / 026,474, filed July 18, 2014. Claim priority under 35 U.S.C. §119. The aforementioned patent applications are incorporated herein by reference as if fully set forth herein. technical field [0003] The field of the invention relates generally to methods and apparatus for using microstructured hydrophobic surfaces, including superhydrophobic surfaces, and more particularly to methods of retaining gas on microstructured hydrophobic surfaces when the microstructured hydrophobic surfaces are submerged in a liquid and equipment. Background technique [0004] By today's convention, a superhydrophobic (SHPo) surface is defined as a solid surface on which water in air forms a contact angle greater than 150 degrees. So far, such high contact angles have only been found on structured hydrophobic surfaces, usually measured in micrometers, although not...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B81B1/00B81C1/00
CPCF15D1/003F15D1/0065B29C59/022B29C2059/023B29K2995/0093B81B1/00B81C1/00C25B5/00B63B1/38B63B2001/387B81B1/006B81C99/0085F15D1/0085
Inventor 徐牧晨金昌津
Owner RGT UNIV OF CALIFORNIA
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